Thomas bailey



(No Model.)

T. BAILEY. PIRBPROOF FLOOR.

No. 570,863. Patentd Nov. 3-, 1896.

INVENTEIR.

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UNITED STATES PATENT OFFICE.

THOMAS BAILEY, OF NEIV YORK, N. Y.

FIREPROO F FLOOR.

SPECIFICATION forming part of Letters Patent No. 570,863, dated November 3, 1896. Application fil d December 12, 1895. Serial No. 571.865. (No model.)

To all whom, it may concern:

Be it known that I, THOMAS BAILEY, a citizen of the United States, and a resident of New York city, in the county and State of New York, have invented certain new and useful Improvements in Fireproof Floors, of which the following is a specification.

My invention relates to the filling of fireproof materialbetwee'n the metal floor-beams; and it consists, essentially, in the improved construction of the supporting part of said filling, as hereinafter described, reference being made to the accompanying drawings, in which Figure 1 is a perspective view of parts of a fireproof floor constructed according to my invention. Fig. 2 represents details partly in side view and partly in end view with a part in section and on an enlarged scale. Fig. 3 represents modifications of some 01": the parts in side and end views. Fig. 4 represents a plan YlGW of parts of the floor with one of the beams in horizontal section. Fig. 5 is a side view of a filling-supportingbar and end views of the parts of floor-beams, showing details of the invention; and Fig. 6 is an end view of the filling-supporting bar as in Fig. 5.

A represents the metallic floor-beams of usual form, between which I arrange transverse metallic angle or other flanged bars I) for supporting-the filling by making a notch c in the main Web at each end adapted to engage edges of the flanges (l of the beams to be connected and supported thereon, the length of the bars and the depth of the notches being such that by presenting the bars diagonally to the beams and engaging one notched end with the flange of one beam and then shifting them to the direct line at right angles to the beams theothernotched end willengage the flange of the other beam and pinch and bind securely thereon and retain the bars in position.

T-bars,as b, or I-bars, as Z), having a'fiange e on each side of the main web will be used, the bars being placed the length of a brick apart with bricks f placed thereon for the lower part of the filling, or the entire filling may consist of bricks, if desired, but concrete or other like material may be used above the supporting-layer of bricks, or corrugated sheet-iron may be used in lieu of bricks for supporting the rest of the filling.

At the ends of the spaces between the beams A and next to the walls of the building where only one flange e is required for supporting the filling-bricks channel-bars,as b ,or L-bars b may be used instead of T- or I-bars, if desired, but intermediately of these the T or I form is necessary, the I-bars being preferable because the top flanges afford better support for wood floor-beams, which it is sometimes desired to lay between the beams A.

It is to be noted that the notches c are located in the ends of the bars at a suitable height from their lower edges to allow sheets or plates g of any suitable kind to be supported on the flanges 6 under the lower edges of the beams Awith air-spaces h between them and the beams,said plates being to receive the ceiling-plasterc' to cover the gap between the ends of the bars and inclose the air-space h under the beams for their protection from heat in case of fire under them. Perforated metal plates, woven-wire sheets, or any suitable material may be employed for this purpose. They will be confined in position prior to the application of the plasterz' by the bricks f next the beams A being laid on them.

To avoid splitting the bars in case of wedging hard on the beam-flanges,l cut the notches with a terminal enlargement of circular or approximately circular form 0 to distribute the stresses and thereby protect the bars against the wedging eifect of the beam-flanges; and for providing practicable bearing-surfaces of the bars on the beam flanges and for securely maintaining the bars with the main webs erect I only cut the notches along the lower lines of the parts 0 to be displaced and bend them out on the upper line at right angles to the main web, thus making bearing-flanges equal in width to the width of the notches, and I arrange the two flanges of each bar on opposite sides, respectively, as shown in Figs. 5 and 6. Thus the bars have more strength at the ends for supporting weight, and theyare held upright more securely.

It is designed that the filling-supporting bars shall bear at thebottoms of the notches against the edges of the beam-flanges suitably for staying the beams laterally, as shown in Fig. 5.

I claim- 1. The combination with the flanged floorsnpporting beams, of flanged filling-supporting bars notched in the ends of the main web and secured to the lower flanges of the beams by the notched ends, said notches formed with the enlarged circular inner terminals substantially as described.

2. The combination with the flanged floorsup porting beams, and the flanged fillin g-supporting bars secured on the lower flanges of the bea1ns,with the flanges of said bars pendent below the lower edges of the beams, of the plastenholding plates supported on the flanges of the bars below the beams and an THOMAS BAILEY.

\Vitnesses W. J. MORGAN, EMORY CUMMINGS. 

